Trivium Test Prep is an independent test prep study guide company that produces and prints all of our books right here in the USA. Our dedicated professionals know how people think and learn, and have created our ASTB book based on what research has shown to be the fastest, easiest, and most effective way to prepare for the exam. Unlike other study guides that are stamped out in a generic fashion, our ASTB-E test prep manual is specifically tailored for your exact needs.